diff --git a/src/components/entity/ha-state-label-badge.js b/src/components/entity/ha-state-label-badge.js
index 7ff55f6ab7..8ed7e898fe 100644
--- a/src/components/entity/ha-state-label-badge.js
+++ b/src/components/entity/ha-state-label-badge.js
@@ -64,9 +64,8 @@ export default new Polymer({
       case 'alarm_control_panel':
         return undefined;
       case 'sensor':
-        return state.state;
       default:
-        return state.state;
+        return state.state === 'unknown' ? '-' : state.state;
     }
   },